Chair locking device



FIG. 1 is a top front perspective view of a chair locking device showing my new design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right-side view thereof;

FIG. 8 is a left-side view thereof;

FIG. 9 is a top front perspective view thereof with adjustable bracket arms in one maximum alternate position; and,

FIG. 10 is a top front perspective view thereof with one adjustable bracket arm in another alternate position. 

CLAIM The ornamental design for a chair locking device, as shown and described. 